Sheave for sliding doors



(No Model.)Y

S.' H.- ROUGH-TON.

`slimm 'PoR SLIDING DOORS.`

` Patented Nov. 18

No. 288,388.A

w wf, im@ m@ Y applied thereto.

-` UNITED STATES,`

PATENT L OFFICE. i y

SAMUEL HRRRRRT HoUcHToN, or HARVARD, MASSAcHUSHTTS. l

SHI-:AVE FOR sLlDlNe DOORS.

SPECIFICATION formingpart of Letters Patent No;` 288,338, dated November `l, 1883.

Application led September 5, 1883. (No model.)

hereby declare the same to be described in the` following specification and represented in the accompanying drawings, of which- Figure l is a frontl elevation, and Fig. 2a vertical and transverse section,.of the lower portion ofa door with myimpro'ved truck Fig. 3 is a front View, Fig. 4 an end view,uFig. 5 a rear View, and Fig. 6 a transverse section, of the truck.

The nature of my invention isdeiined in theV claims hereinafter presented.

The trucks of heavy stable or sliding doors are usually applied and bolted to one of the sides of the door without their wheels being extended within the frame, asis the case with my improvement, in `which the door or the y lower girtof the vframe thereof is recessed to the median arm.

receive the upper half or portion of the wheel of each truck, and such wheel is sustained by a tri-armed supporter slotted in its arms, `and provided with a doorbearing extending from In the drawings, A denotesa portion `of a door at and near one of its lower corners, a being the lower girt of the door-frame and b The said, girt has a semicircular or segmental recess, c, made in it from its loweredge upward, as represented, the wheel d ofthe truck B being inserted in such recess so as to proj ectinto and downward from it. The said wheel is to` revolve on a journal, e, extending from the tri-armed supporter f, whose median arm is at right angles to the other arms. In each arm there is a vertical slot, y, andfrom the median arm there extends rearward over the wheel a flange or bearing,

h, on which the girt of the door is to rest or bear either directly or by a piece oi' wood or other proper material inserted between them. Screw-bolts i going through the door pass` through the slots .g and have nuts lc screwed on them and against thetri-armed supporter.

being adj usted vertically to raise the door in F case of sagging of it, or for any other purpose, the bearngh prevents the weight of the door ,from causing the truck to accidentally move i upward relatively to the door. By recessing thegirt and placing the wheel in the recess,

so as to carry the median plane of the wheel case when the truck is wholly on one side of y the door.

I claimo l. The door-frame recessed to receive the` truck-Wheel, in combination with such wheel andwith its tri-armed supp orter having slots in its arms7 as and for thepurpose described, such wheel and'supporter being arranged with each other and with the door-frame, substantially l as set forth. one. of its stringers, such girt being tenoned into the Stringer.

2. The tri-armed supporter provided with the fastening-slots in its arms, and with the door-bearing extending from Jthe median arm and over the wheel, substantially as represented. g

` SAMUEL HERBERTHOUGHTON. Witnesses: Y

R. H. EDDY, E.I B. PRATT. 

